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District of Columbia, District of Columbia

Gutter cleaning, repair and new gutters in Washington, DC

Washington gets about 46 inches of rain in a normal year, and on about 11 days a year an inch or more falls in a single day. The wettest season is summer (June to August), with about 12.8 inches; the driest is winter (December to February), with 9.5. That is about 28,300 gallons a year off each 1,000 square feet of roof, every drop of it through a gutter and a downspout.

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Washington: rain and roofs

NOAA station USC00186350, 3 mi
45.6 in
Rain in a normal year, Washington
NOAA normal, NATL ARBORETUM DC
11.4
Days with an inch or more
a year
28,300 gal
Water off 1,000 sq ft of roof in Washington
0.62 gal per sq ft per inch
6.77 in/hr
5-minute downpour, once in 10 years
NOAA Atlas 14 Volume 2
Nov 8
First fall frost
median date
1957
Median year homes were built
ACS 2020–2024
70%
Homes built before 1980
ACS 2020–2024
Winter9.5 in
Spring11.7 in
Summer12.8 in
Fall11.6 in

Bars to one scale; the longest is summer (June to August).

When to clean gutters in Washington

The first fall frost comes around November 8 in a typical year here, and the last spring frost around March 29 (median dates, NOAA normals). Booking the fall cleaning after the first frost, once the trees over the roof are bare, catches the season’s drop in one visit; the spring cleaning comes after the pollen and catkins are down.

When to clean gutters explains how the trees over a roof change the schedule.

Gutter and downspout size for Washington rain

The short, hard downpour is what a gutter is sized for. In Washington the five-minute rain expected about once in ten years falls at 6.77 inches an hour (NOAA Atlas 14 Volume 2). At that rate one 2-by-3-inch downspout drains about 1,060 square feet of roof and one 3-by-4-inch downspout about 2,130, by the rule in the Copper Development Association’s design handbook. Try your own roof in the gutter and downspout calculator, which starts from this figure.

The houses in Washington

Half the homes in Washington were built by 1957, 70% before 1980 (ACS 2020–2024). Houses that age have often had their gutters replaced once already; if not, the original runs and the boards behind them deserve a close look. On a house built before 1978, replacing more than 20 square feet of painted fascia or trim falls under the EPA’s lead-safe rule, so ask whether the crew is certified.

41% of households own their home, and 11% of homes are detached houses, 22% townhouses. If an association maintains the exterior, the gutters may be its job rather than yours; check before calling.

Hiring in District of Columbia

The District requires a home improvement contractor license for home improvement contracts of $300 or more, and an unlicensed contractor may not take any payment before the work is fully complete (16 DCMR 800.1). Check the license before signing, and pay nothing up front to anyone who cannot show one.

Source: 16 DCMR Chapter 8. Look-up: DC business license verification.

Gutter work in Washington

With half the homes built by 1957, replacement gutters and the fascia behind them come up more often here than in newer suburbs. The line takes all of it:

Nearby

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